全文获取类型
收费全文 | 26487篇 |
免费 | 643篇 |
国内免费 | 170篇 |
专业分类
管理学 | 2506篇 |
劳动科学 | 47篇 |
民族学 | 531篇 |
人才学 | 12篇 |
人口学 | 2740篇 |
丛书文集 | 4256篇 |
理论方法论 | 1244篇 |
综合类 | 7743篇 |
社会学 | 5554篇 |
统计学 | 2667篇 |
出版年
2024年 | 11篇 |
2023年 | 78篇 |
2022年 | 257篇 |
2021年 | 255篇 |
2020年 | 203篇 |
2019年 | 184篇 |
2018年 | 1896篇 |
2017年 | 2020篇 |
2016年 | 1345篇 |
2015年 | 546篇 |
2014年 | 618篇 |
2013年 | 1069篇 |
2012年 | 1240篇 |
2011年 | 2220篇 |
2010年 | 2260篇 |
2009年 | 1964篇 |
2008年 | 1936篇 |
2007年 | 2161篇 |
2006年 | 1223篇 |
2005年 | 1281篇 |
2004年 | 803篇 |
2003年 | 644篇 |
2002年 | 641篇 |
2001年 | 462篇 |
2000年 | 321篇 |
1999年 | 340篇 |
1998年 | 200篇 |
1997年 | 193篇 |
1996年 | 209篇 |
1995年 | 168篇 |
1994年 | 98篇 |
1993年 | 98篇 |
1992年 | 51篇 |
1991年 | 64篇 |
1990年 | 47篇 |
1989年 | 50篇 |
1988年 | 39篇 |
1987年 | 27篇 |
1986年 | 19篇 |
1985年 | 19篇 |
1984年 | 7篇 |
1983年 | 7篇 |
1982年 | 2篇 |
1981年 | 6篇 |
1980年 | 7篇 |
1978年 | 2篇 |
1976年 | 3篇 |
1973年 | 1篇 |
1970年 | 2篇 |
1969年 | 1篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
11.
计划生育政策下的当今都市环境中生存的独生子女群体,其特性大异于前代人,压力源亦异于前人,所思所念以及心理困扰极具特点,进入青春期后特征尤为明显。抓住当今都市独生子女的本质特征,对未来青少年教育的方向及方式具有特殊意义和价值。 相似文献
12.
There is considerable speculation that female political empowerment could improve population health. Yet, evidence to date is limited, and explanations for why political empowerment would matter and the conditions under which this might be enhanced or muted are not well understood. In this article, we draw on theoretical work on the politics of representation to frame an investigation of whether increases in the percentage of females in a country’s parliament influence mortality rates. We further examine whether the relationship is conditioned by extent of democracy and economic and social development. Through multivariate longitudinal regression, we analyze four indicators of mortality in 155 countries spanning 1990 to 2014 with controls for initial country conditions, time-stable structural predispositions to higher mortality, and a number of time-varying potential confounders. Results indicate that a high level of female representation—30 % or greater in our models—has large negative associations with mortality, that these are particularly strong in lesser developed and weak democratic contexts, that high female political representation effectively offsets liabilities associated with low development, and that the relationships are robust to various operationalizations of social development. In the end, our research provides a particularly thorough accounting of the relationship between female political representation and population health, particularly by specifying the conditions under which female representation is most salient. In doing so, the research suggests important links between issues of female empowerment, political context, and developmental trajectories of countries more generally. 相似文献
13.
This paper develops a unified model of dual and unitary job holding based on a Stone-Geary utility function. The model incorporates both constrained and unconstrained labor supply. Panel data methods are adapted to accommodate unobserved heterogeneity and multinomial selection into six mutually exclusive labor supply regimes. We estimate the wage and income elasticities arising from selection and unobserved heterogeneity as well as from the Stone-Geary Slutsky equations. The labor supply model is estimated with data from the British Household Panel Survey 1991–2008. Among dual job holders, our study finds that the Stone-Geary income and wage elasticities are much larger for labor supply to the second job compared with the main job. When the effects of selection and unobserved heterogeneity are taken account of, the magnitudes of these elasticities on the second job tend to be significantly reduced. 相似文献
14.
This research focuses upon employment in the new economy, exploring labour protection and social protection in the digital age in China. Through an empirical survey conducted in three Chinese cities, social insurance and the labour rights of employees in the digital economic sector, such as gig employment, e-commerce, and various other forms of online employment, have been examined in-depth. This study reveals new regulatory loopholes in the digital labour market, which have substantially eroded the basis of social policy arrangements in China, “softening” participation in social insurance branches and compliance with labour regulations remarkably. Drawing upon the theoretical concepts of Polanyi on embeddedness and disembeddedness, we argue that the digital employment sector in China has been increasingly disembedded from social institutions and social control. The new configuration in the digital field of social policy requires novel conceptual models and institutional settings to cope with increasing social risks in virtual spaces. 相似文献
15.
Economic theory establishes that pension privatization weakens the link between old and young and so reduces the incentive to invest in public education in an economy with lower return rate of capital than growth rate of wage. However, empirical studies of the link change are few. In this paper, we investigate the effects of pension privatization and the central government’s subsidy to individual accounts on public education spending in a three-period overlapping generation model. And then, we take contemporary pension reforms in a number of Chinese provinces as offering natural experiment conditions. Using a difference-in-difference framework and 282 municipal districts panel data over years 1998–2009, we test the pension-education theoretical link change. Both our theoretical and empirical results confirm that pension privatization is adversely associated with local public spending on education in China. Private pension subsidies, moreover, magnify this effect. Our study supports the theoretical assertion and selective empirical findings of a negative intergenerational effect of pension privatization. 相似文献
16.
陈小辉 《重庆师范大学学报(哲学社会科学版)》2020,(1):70
中国古代金石文献极其丰富,《石刻史料新编》三辑即著录了《四川金石志》三卷、《安徽金石略》十卷、《歙县金石志》十四卷等书。另外,今人还编有《巴中石窟内容总录》《天柱山山谷流泉石刻》等书。这些书籍包含了许多宋人诗歌,现利用这些文献辑得宋佚诗39首,补充作者26人,又校正了作者及补充字句题序若干。 相似文献
17.
From the inception of the proportional representation movement it has been an issue whether larger parties are favored at
the expense of smaller parties in one apportionment of seats as compared to another apportionment. A number of methods have
been proposed and are used in countries with a proportional representation system. These apportionment methods exhibit a regularity
of order, as discussed in the present paper, that captures the preferential treatment of larger versus smaller parties. This
order, namely majorization, permits the comparison of seat allocations in two apportionments. For divisor methods, we show
that one method is majorized by another method if and only if their signpost ratios are increasing. This criterion is satisfied
for the divisor methods with power-mean rounding, and for the divisor methods with stationary rounding. Majorization places
the five traditional apportionment methods in the order as they are known to favor larger parties over smaller parties: Adams,
Dean, Hill, Webster, and Jefferson.
Received: 5 August 2000/Accepted: 24 October 2001 相似文献
18.
19.
设计了乙醇发酵与膜透析耦合系统并进行了试验研究.结果表明,该过程可减少产物乙醇对发酵的抑制作用,膜透析系统的乙醇总量比对照组提高20%~80%,基质转化率提高30%~80%. 相似文献
20.